Gaya APA
Moser.C.A, ., G, 1, K. (1971).
Survey Methods in Social Investigation (second edition).
London:
Heinemann Educatonal Books Ltd.
Gaya MLA
Moser.C.A, ., G, 1.j.ll., Kalton.
"Survey Methods in Social Investigation".
second edition
London:
Heinemann Educatonal Books Ltd,
1971.
Text.